The streets of San Francisco are used to weird smells. However, on Wednesday morning, a mysterious rotten-egg and sulfur-like odor that baffled city and federal agencies and prompted dozens of phone calls of complaint.

San Francisco’s Planning Department has decided to add $2 billion in development fees to a project that seeks to “upzone the Central South of Market area,” which the city promises will result in more “affordable housing”.

There was a long line of advocates claiming responsibility for same-sex marriage’s victory at the Supreme Court on Friday, but a key driver was the support two years ago from 278 mostly multi-national tech companies that included Apple, Facebook, Google, Microsoft, Amazon, Cisco, eBay, Electronic Arts, Intel, Intuit, Oracle, Twitter and Zynga.